Keikai is an open source, cloud-based spreadsheet application designed to provide an intuitive and powerful interface for data analysis. It combines the convenience of web-based technology with the power of desktop applications, allowing users to create and share spreadsheets online with ease. Keikai has a wide range of features, such as spreadsheet customization, real-time collaboration, data visualization, and more. It also offers support for various programming languages and frameworks, including Java, JavaScript, and Python. With Keikai, users can create complex and powerful spreadsheets with ease, allowing them to make informed decisions quickly.
The Microsoft Excel Viewer program was retired in April 2018. Microsoft recommends using the free app https://alternativeapp.info/software/microsoft-excel/ Mobile, available for free in the stores for Windows, iOS and Android.